I've always imagined Denny brewing (and most often existing) in a utilikilt.

Despite your fantasy I usually don't even wear shorts when brewing in warm weather. I'm extremely clumsy and I've hurt myself way too many times. I always wear long pants and closed shoes when I brew. After the boil, when it's down to chilling, xfer, and cleanup, I'll put on shorts and Tevas if it's a warm day.

Like Denny I always go with long pants and closed shoes, at least until the boil is done. I need to be careful to wear enough clothes for the outside temp. This spring I came down with a good cold a day after brewing, i think because it was pretty chilly outside and I was running around too much in a t-shirt and later in the day with damp shoes.

When I brew (normally a weekend) I love to wear old clothes I have no fear about tearing, staining or wearing out.